Water Chemistry Quiz

What is the molecular formula of water?

• H2O2

• H2O

• HO2

• H3O

What type of bond is responsible for the cohesion of water molecules?

• Ionic bonds

• Metallic bonds

• Hydrogen bonds

• Covalent bonds

What is the role of water in cells according to the text?

• It acts as a solvent only.

• It is a waste product.

• It is an important metabolite and temperature buffer.

• It is used for structural support.

What causes the polarity in water molecules?

• Equal sharing of electrons

• Unequal sharing of electrons

• Loss of electrons

• Gain of electrons

What charge does oxygen acquire in a water molecule due to its electronegativity?

• Slightly positive (δ+)

• Neutral

• Slightly negative (δ-)

• Fully positive

What is the term used to describe water's ability to dissolve a large number of substances?

• Hydrophobic

• Hydrophilic

• Universal solvent

• Cohesive

What forms when the polar regions of a water molecule associate with molecular surfaces that have an opposing charge?

• Ionic bonds

• Hydration shells

• Covalent bonds

• Surface tension

What is the role of water in metabolic reactions within cells?

• It acts as a transport medium

• It forms hydration shells

• It is a reagent and a product

• It creates surface tension

What is the term for substances that do not dissolve in water?

• Hydrophilic

• Hydrophobic

• Solvent

• Cohesive

What property of water allows small insects to glide along its surface?

• Solvent properties

• Thermal properties

• Surface tension

• Viscosity